Which of the following is (are) potential applications of electromyography? 1. Monitoring activation of the muscles of the upper airway 2. Monitoring contractile strength of the heart 3. Monitoring activity of intercostal muscles 4. Monitoring peripheral

a. 1 only c. 1 and 3
b. 1 and 2 d. 2, 3, and 4

ANS: C
The electromyogram can be used to monitor activation of the muscles that expand the upper air-way and to monitor the intercostal muscles as an alternative to assess respiratory activity.